Arduini D, Rizzo G, Romanini C, Mancuso S
Department of Obstetrics and Gynecology, Università Cattolica S. Cuore, Rome, Italy.
J Ultrasound Med. 1989 Apr;8(4):193-6. doi: 10.7863/jum.1989.8.4.193.
The changes in fetal hemodynamics during maternal administration of 60% humidified oxygen were assessed by Doppler ultrasonography in 15 growth retarded fetuses characterized by abnormal blood flow velocity waveforms. During oxygen treatment, nine fetuses exhibited temporary hemodynamic modifications as expressed by a recovery toward the normal range of vascular impedance in the descending aorta and internal carotid artery, whereas no changes were found in the remaining six fetuses. In this latter group, a rapid deterioration of fetal condition occurred and all the fetuses were delivered by emergency cesarean section within 9 days from the Doppler examination. The absence of recovery of vascular resistance during acute maternal oxygen administration seems therefore to be a useful marker of imminent acute distress in fetuses with growth retardation secondary to chronic hypoxia.
通过多普勒超声检查评估了15例以血流速度波形异常为特征的生长受限胎儿在母体吸入60%湿化氧气期间的胎儿血流动力学变化。在氧气治疗期间，9例胎儿表现出暂时的血流动力学改变，表现为降主动脉和颈内动脉血管阻抗恢复至正常范围，而其余6例胎儿未发现变化。在后一组中，胎儿状况迅速恶化，所有胎儿在多普勒检查后9天内通过急诊剖宫产分娩。因此，在母体急性吸氧期间血管阻力未恢复似乎是慢性缺氧所致生长受限胎儿即将发生急性窘迫的有用标志物。
